<s>
In	O
econometrics	O
,	O
the	O
Park	B-General_Concept
test	I-General_Concept
is	O
a	O
test	O
for	O
heteroscedasticity	B-General_Concept
.	O
</s>
<s>
The	O
test	O
is	O
based	O
on	O
the	O
method	O
proposed	O
by	O
Rolla	O
Edward	O
Park	O
for	O
estimating	O
linear	B-General_Concept
regression	I-General_Concept
parameters	O
in	O
the	O
presence	O
of	O
heteroscedastic	B-General_Concept
error	O
terms	O
.	O
</s>
<s>
We	O
reject	O
the	O
null	O
hypothesis	O
of	O
homoscedasticity	B-General_Concept
and	O
conclude	O
that	O
heteroscedasticity	B-General_Concept
is	O
present	O
.	O
</s>
